In plain words
O king, remembering again and again this wondrous and sacred dialogue between Keshava and Arjuna, I rejoice again and again.
Word for word
O king, remembering and remembering this wondrous, holy dialogue of Keśava and Arjuna, I rejoice again and again.
The commentators
Bhagavadgītābhāṣyam· bhāṣya
हे राजन् धृतराष्ट्र, संस्मृत्य संस्मृत्य प्रतिक्षणं संवादम् इमम् अद्भुतं केशवार्जुनयोः पुण्यम् इमं श्रवणेनापि पापहरं श्रुत्वा हृष्यामि च मुहुर्मुहुः प्रतिक्षणम् ॥ ७६ ॥
In plain words
O king, Dhṛtarāṣṭra — I go back to it and back to it, moment after moment: this astonishing conversation between Keśava and Arjuna. It is holy, and it takes wrongdoing off a person by hearing alone. I heard it, and I thrill again and again — at every single moment.
Close to the Sanskrit
O king Dhṛtarāṣṭra — recalling, recalling at every moment this wondrous dialogue of Keśava and Arjuna, this holy one, remover of wrongdoing even by the hearing of it, having heard it, I thrill again and again, at every moment.